1Department of Electronics and Communication Engineering, University Institute of Technology, The University of Burdwan, Burdwan West Bengal, India 2Department of Instrumentation Science, Jadavpur University, Kolkata, West Bengal, India 3Department of ECE, North Eastern Hill University, Shillong, Meghalaya India 4Department of Physics, The University of Burdwan, Burdwan West Bengal, India

Since last few decades optics has already proved its strong potentiality for conducting parallel logic, arithmetic and algebraic operations due to its super-fast speed in communication and computation. So many different logical and sequential operations using all optical frequency encoding technique have been proposed by several authors. Here, we have keened out all optical dibit representation technique, which has the advantages of high speed operation as well as reducing the bit error problem. Exploiting this phenomenon, we have proposed all optical frequency encoded dibit based XOR and XNOR logic gates using the optical switches like add/drop multiplexer (ADM) and reflected semiconductor optical amplifier (RSOA). Also the operations of these gates have been verified through proper simulation using MATLAB (R2008a). DOI: 10.21883/OS.2018.03.45655.82-17